package com.hzhc.util.quarz;

import com.hzhc.common.Constants;
import com.hzhc.constant.ScheduleConstants;
import com.hzhc.entity.TaskPlan;
import com.hzhc.utils.CronUtils;
import com.hzhc.utils.SpringUtils;
import com.hzhc.utils.StringUtils;
import org.quartz.*;

/**
 * 定时任务工具类
 *
 * @author wxk
 */
public class ScheduleUtils {
    /**
     * 得到quartz任务类
     *
     * @param taskPlan 执行计划
     * @return 具体执行任务类
     */
    private static Class<? extends Job> getQuartzJobClass(TaskPlan taskPlan) {
        return QuartzDisallowConcurrentExecution.class;
    }

    /**
     * 构建任务触发对象
     */
    public static TriggerKey getTriggerKey(Long jobId, String jobGroup) {
        return TriggerKey.triggerKey(ScheduleConstants.TASK_CLASS_NAME + jobId, jobGroup);
    }

    /**
     * 构建任务键对象
     */
    public static JobKey getJobKey(Long jobId, String jobGroup) {
        return JobKey.jobKey(ScheduleConstants.TASK_CLASS_NAME + jobId, jobGroup);
    }

    /**
     * 创建定时任务
     */
    public static void createScheduleJob(Scheduler scheduler, TaskPlan job) {
        Class<? extends Job> jobClass = getQuartzJobClass(job);
        // 构建job信息
        Long jobId = job.getId();
        String jobGroup = ScheduleConstants.DEFAULT;
        JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(getJobKey(jobId, jobGroup)).build();

        // 表达式调度构建器
        CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(job.getExecuteCycle());
        cronScheduleBuilder = handleCronScheduleMisfirePolicy(job, cronScheduleBuilder);

        // 按新的cronExpression表达式构建一个新的trigger
        CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(jobId, jobGroup))
                .withSchedule(cronScheduleBuilder).build();

        // 放入参数，运行时的方法可以获取
        jobDetail.getJobDataMap().put(ScheduleConstants.TASK_PROPERTIES, job);
        // 判断是否存在
        try {
            if (scheduler.checkExists(getJobKey(jobId, jobGroup))) {
                // 防止创建时存在数据问题 先移除，然后在执行创建操作
                scheduler.deleteJob(getJobKey(jobId, jobGroup));
            }

            // 判断任务是否过期
            if (StringUtils.isNotNull(CronUtils.getNextExecution(job.getExecuteCycle()))) {
                // 执行调度任务
                scheduler.scheduleJob(jobDetail, trigger);
            }

            // 暂停任务
            if (ScheduleConstants.Status.PAUSE.getValue().equals(job.getStatus())) {
                scheduler.pauseJob(ScheduleUtils.getJobKey(jobId, jobGroup));
            }
        } catch (SchedulerException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 设置定时任务策略
     */
    public static CronScheduleBuilder handleCronScheduleMisfirePolicy(TaskPlan job, CronScheduleBuilder cb) {
        if(ScheduleConstants.MISFIRE_DEFAULT.equals(job.getMisfirePolicy())){
            return cb;
        }else if(ScheduleConstants.MISFIRE_IGNORE_MISFIRES.equals(job.getMisfirePolicy())){
            return cb.withMisfireHandlingInstructionIgnoreMisfires();
        }else if(ScheduleConstants.MISFIRE_FIRE_AND_PROCEED.equals(job.getMisfirePolicy())){
            return cb.withMisfireHandlingInstructionFireAndProceed();
        }else {
            return cb.withMisfireHandlingInstructionDoNothing();
        }
    }

    /**
     * 检查包名是否为白名单配置
     *
     * @param invokeTarget 目标字符串
     * @return 结果
     */
    public static boolean whiteList(String invokeTarget) {
        String packageName = StringUtils.substringBefore(invokeTarget, "(");
        int count = StringUtils.countMatches(packageName, ".");
        if (count > 1) {
            return StringUtils.containsAnyIgnoreCase(invokeTarget, Constants.JOB_WHITELIST_STR);
        }
        Object obj = SpringUtils.getBean(StringUtils.split(invokeTarget, ".")[0]);
        String beanPackageName = obj.getClass().getPackage().getName();
        return StringUtils.containsAnyIgnoreCase(beanPackageName, Constants.JOB_WHITELIST_STR)
                && !StringUtils.containsAnyIgnoreCase(beanPackageName, Constants.JOB_ERROR_STR);
    }
}
